trapezoid
Trapezoid.
The US term for the shape is trapezoid, and has only one pair of parallel sides.(The term trapezium is used for these shapes in the UK and many other countries.)
trapezoids
A square
rhombus
rectangular
Any polygon with four or more sides can have a pair of parallel sides. It is also possible to to have non-polygonal shapes - eg a cigar-shape - that has parallel sides.
A quadrilateral that has only one pair of parallel sides (the other pair not parallel) is a trapezium.
No. A trapezoid only has one pair of parallel sides.
Any polygon, other than a triangle, can have one pair of parallel sides.
It has no parallel sides
The name of the four-sided shape that has only one pair of parallel sides is known as a trapezoid. The other two sides are not parallel to each other. There are many other shapes with more than four sides that have one pair of parallel sides but these typically don't have special names. So assuming the question is only referring to four-sided figures, the answer is a trapezoid.
A trapezoid has only one pair of parallel sides of different lengths.